Consumption AdBlue + Diesel

Hello everyone, I’m a pretty green beak about trucks, but I really need information for my work. Can you tell me how much Diesel+AdBlue such a Euro5 truck really consumes? Interesting would be a big e.g. Actros o. Axor where 20 pallets of drinks fit on it and then a smaller one for distribution traffic e.g. Atego where 10 euro pallets fit on it. And where do you buy the AdBlue? Dierekt at the tank, or have your forwarders own tanks on the premises nde? (Seen from the internet that you can order 1000l containers.) Would be a great help if you were to write your experiences to me.